Results from a machine built to study cloud formation suggest that theories on the subject need to be updated.

Saudi officials say archaeologists are excavating a site that suggests horses were domesticated 9,000 years ago in the Arabian Peninsula.

Ant colonies rely on knowledgeable individuals to guide them to a new nest site when theirs is destroyed, according to scientists.

Taking a stroll may soon be enough to re-charge your mobile phone, after US researchers developed a way to capture energy from human motion.

A small, 160-million-year-old fossil from China shows that placental and marsupial mammals diverged much earlier than previously suggested.

The first human-like astronaut robot - Robonaut 2 or R2 - has awakened at the International Space Station - and already started tweeting.

Australian scientists say they have discovered a cheap and effective method of preventing the transmission of dengue fever.

Women growing up starved of calories are more likely to develop heart disease in later life, a study suggests.